they're gonna have a time of it. more and more resources for home builds, 80% receivers, and whatnot. a hundreds-of-millions-headed hydra, they don't have the people.

$12 or so gets you a shotgun at any plumbing supply.
a bit more at the hardware store, and you can build a mac 10, or an ar15 receiver.

gun builder how to videos on youtube, even while YT demonetizes and deletes content, and groups on facebook, which pop up under different names as they're deleted for content violations...
"the unknown cat" and "liberator 12K" are two of my favorite YT channels...

as available as information is these days, i guess i'm optimistic.